如何使用 rhino 模拟存根 MVC RC1 中的 HttpSessionState？

Question

我正在尝试利用 最近在 asp.net mvc rc1 中进行 ControllerContext 重构。 我应该能够相当简单地对会话进行存根，但在运行以下代码时，我在第 2 行不断收到 System.NullReferenceException：

var mockContext = MockRepository.GenerateStub<ControllerContext>();
mockContext.Stub(x => x.HttpContext.Session["MyKey"]).Return("MyValue");

我做错了什么？

编辑：我刚刚验证了截至本文为止我拥有最新版本的犀牛。

Answer 1

您还需要模拟 HttpContext 才能使其正常工作。
我为此使用了 HttpContext 的模拟：

public class HttpContextMock
{
    private readonly HttpContextBase _contextBase;
    private readonly HttpRequestBase _requestBase;
    private readonly HttpResponseBase _responseBase;
    private readonly HttpSessionStateBase _sessionStateBase;
    private readonly HttpServerUtilityBase _serverUtilityBase;

    public HttpContextBase Context { get { return _contextBase; } }
    public HttpRequestBase Request { get { return _requestBase; } }
    public HttpResponseBase Response { get { return _responseBase; } }
    public HttpSessionStateBase Session { get { return _sessionStateBase; } }
    public HttpServerUtilityBase Server { get { return _serverUtilityBase; } }


    public HttpContextMock()
    {
        _contextBase = MockRepository.GenerateStub<HttpContextBase>();
        _requestBase = MockRepository.GenerateStub<HttpRequestBase>();
        _responseBase = MockRepository.GenerateStub<HttpResponseBase>();
        _sessionStateBase = MockRepository.GenerateStub<HttpSessionStateBase>();
        _serverUtilityBase = MockRepository.GenerateStub<HttpServerUtilityBase>();

        _contextBase.Stub(x => x.Request).Return(_requestBase);
        _contextBase.Stub(x => x.Response).Return(_responseBase);
        _contextBase.Stub(x => x.Session).Return(_sessionStateBase);
        _contextBase.Stub(x => x.Server).Return(_serverUtilityBase);

        _requestBase.Stub(x => x.IsAuthenticated).Return(true);

        _contextBase.User = new GenericPrincipal(new GenericIdentity("[email protected]"),
                                                 new string[] {"Admin"});

    }
}

在测试的设置中，我创建了一个控制器的实例：

    [SetUp]
    public override void TestSetUp()
    {
        base.TestSetUp();

        repository = MockRepository.GenerateMock<IFooRepository>();
        controller = new FooController()
                         {
                             FooRepository = repository,
                             UserRepository = userMockRepository
                         };

        controller.ControllerContext = new ControllerContext(context.Context, new RouteData(), controller);
    }

一切工作正常，我可以向会话和许多其他内容添加参数。
希望这可以帮助。